How a game looks and feels and plays has nothing to do with technology per se. It is an obvious and superficial thing to say that technology has advanced in 20 years. Yes we all know this. We all also know that D&D editions have changed since the original BG games. These are trite observations.
The characteristics of the original BG games that govern how a game labeled "Baldur's Gate" looks and feels and plays are such things as: party-based; party size of six; isometric perspective; RTwP combat; single-player focused; a certain art style that is NOT cartoonish and garish; a certain writing style that is serious and somber and somewhat dark; a deep and rich main story, and this story is what the game is about and NOT combat; staying very faithful to D&D rules; staying very faithful to established canon Forgotten Realms lore; etc.
There is a certain very easily and objectively identifiable formula that makes the original BG games what they are, and as such if BG3 significantly deviates from that formula then logically it is not a BG game.
The Technology, Edition, and even timeline have advanced a great deal, to shrug that off as trite observation is disingenuous. The interplay of those three points, makes for a very different game.
